Pakistan Telecom News

Computer is an electronic machine that is used to solve different kinds of problems according to a set of instructions given to it. Computer consists of different units that perform various functions. All the operations of the computer are controlled by the program instructions. These program instructions are known as software. A system is a [...]

The keyboard is the most commonly used input device. It is used to feed data and instructions into a computer. It is similar to an electric typewriter. A keyboard contains keys for each alphabetic characters, digits and special characters. The data and instructions are feed into the computer by pressing the related keys on the [...]